2023 Brasil Tennis Challenger

Country	Player	Rank1	Seed
CHI	Alejandro Tabilo	103	1
ARG	Camilo Ugo Carabelli	127	2
ARG	Juan Manuel Cerúndolo	143	3
BRA	Felipe Meligeni Alves	165	4
ARG	Renzo Olivo	183	5
ARG	Facundo Díaz Acosta	198	6
BRA	Matheus Pucinelli de Almeida	210	7
ARG	Genaro Alberto Olivieri	227	8
CHI	Tomás Barrios Vera	230	9

• ¹ Rankings are as of 9 January 2023.^[2]

The following players received wildcards into the singles main draw:

• Pedro Boscardin Dias
• João Lucas Reis da Silva
• Eduardo Ribeiro

The following players received entry into the singles main draw as alternates:

• Térence Atmane
• Daniel Dutra da Silva

The following players received entry from the qualifying draw:

• Andrey Chepelev
• Chung Yun-seong
• Murkel Dellien
• Edoardo Lavagno
• Oleg Prihodko
• Thiago Seyboth Wild

The following players received entry as lucky losers:

• Moez Echargui
• Carlos Sánchez Jover

• Andrea Collarini def. Tomás Barrios Vera 6–2, 7–6^(7–1).

• Orlando Luz / Marcelo Zormann def. Andrea Collarini / Renzo Olivo Walkover.